Php upload errror -> string

UploadErrorMessage.php

<?php

/**
 * UploadErrorMessage
 */
class UploadErrorMessage
{
    /**
     * @var int upload error code
     */
    protected $code;

    /**
     * @param int $code upload error code
     */
    public function __construct($code)
    {
        $this->code = $code;
    }

    /**
     * Get string representation of error 
     * @return string
     */
    public function __toString()
    {
         switch ($this->code) {
            case UPLOAD_ERR_INI_SIZE:
                $message = "The uploaded file exceeds the upload_max_filesize directive in php.ini";
                break;
            case UPLOAD_ERR_FORM_SIZE:
                $message = "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form";
                break;
            case UPLOAD_ERR_PARTIAL:
                $message = "The uploaded file was only partially uploaded";
                break;
            case UPLOAD_ERR_NO_FILE:
                $message = "No file was uploaded";
                break;
            case UPLOAD_ERR_NO_TMP_DIR:
                $message = "Missing a temporary folder";
                break;
            case UPLOAD_ERR_CANT_WRITE:
                $message = "Failed to write file to disk";
                break;
            case UPLOAD_ERR_EXTENSION:
                $message = "File upload stopped by extension";
                break;

            default:
                $message = "Unknown upload error";
                break;
        }
        return $message;
    }
}